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Mission type Earth Observation
Remote Sensing
Operator ISRO
Mission duration Failed to orbit
Spacecraft properties
Bus I-1K
Manufacturer ISRO
Launch mass 846 kilograms (1,865 lb)
Power 415 watts
Start of mission
Launch date September 20, 1993 (1993-09-20)
Rocket PSLV-D1
Launch site Sriharikota FLP
Orbital parameters
Reference system Geocentric
Epoch Planned

IRS-P1 or IRS-1E was an experimental earth observation mission undertaken by Indian Space Research Organisation (ISRO). The objective of the mission was to develop earth imagery using instruments carried on board. Due to a malfunction in the last stage of the rocket, the satellite deviated from its path and plunged into the sea.[1]


IRS-P1 was a follow-up mission to the satellite IRS-1A, to develop India's capability in the field of remote sensing. The satellite was to take up missions in the area of ground-water exploration, land use, forest and flood mapping.[2] The letter 'P' in the Indian Remote Sensing series of Earth Observation satellites indicates that the satellite was to be launched aboard a Polar Satellite Launch Vehicle (PSLV).[3] It was launched on September 20, 1993.[4]


IRS-P1 carried two payloads:

  • LISS-I (Linear Imaging Self-Scanning System)
  • MEOSS (Monocular Electro-Optical Stereo Scanner)[5]

Mission Result[edit]

IRS-P1 mission was a failure, as the last stage of the PSLV-D1 malfunctioned, so failed to launch the satellite into its desired orbit.

See also[edit]


  1. ^ "IRS-P1 Satellite (Indigenously Launched (P) Series)". Indian Institute of Technology, Bombay. Retrieved March 11, 2013. 
  2. ^ "Program: IRS". World Space stamp catalog. October 7, 2005. Retrieved March 11, 2013. 
  3. ^ "IRS-P3". Earthnet Online. Retrieved 2013-02-02. 
  4. ^ "IRS-1E". Indian Space Research Organisation. Retrieved March 11, 2013. 
  5. ^ "IRS (Indian Remote Sensing Satellites) - Overview and early LEO Program of ISRO". Retrieved March 11, 2013. 

External links[edit]